† Citizen voting-age population estimated for prior cycles; 2004 predates the ACS and is extrapolated. Source: ACS 5-year, table B05003.
——
D+60R+60
1 counties by 2024 margin · County returns · MIT Election Lab
People and households
Who lives here
Exact values for this place, its state, and the United States.
Race · ethnicity · ancestry
Communities and origins
GroupSt. Marys, PAPennsylvaniaUnited States
German42.5%21.6%12.5%
Italian18.8%10.6%4.8%
Irish13.5%14.8%9.4%
English7.2%8.3%9.5%
Polish5.9%5.4%2.2%
Swedish5.0%——
American4.6%4.4%5.3%
French1.6%—1.6%
Mexican0.4%1.4%11.3%
Puerto Rican0.3%3.7%1.8%
Cuban0.2%0.2%0.7%
Spanish0.1%——
Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.
Age and life stage
Measure
St. Marys, PA
Pennsylvania
United States
Median age
48.4
41.2
39.1
Age 18–24
6.8%
8.9%
9.2%
Age 65 and older
24.1%
19.5%
17.2%
Household economy
Measure
St. Marys, PA
Pennsylvania
United States
Median household income
$66,380
$77,971
$84,427
Poverty rate
8.7%
11.7%
12.5%
Bachelor's degree or higher (25+)
20.6%
35.2%
35.6%
Languages at home
Measure
St. Marys, PA
Pennsylvania
United States
Speaks a non-English language at home
1.6%
12.4%
22.3%
Religious landscape
Measure
St. Marys, PA
Pennsylvania
United States
Catholic
40.9%
21.9%
18.6%
Evangelical Protestant
2.6%
9.3%
16.5%
Unclaimed / not counted
44.6%
53.1%
51.5%
Mainline Protestant
10.8%
10.3%
5.2%
American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations.
St. Marys, PA
presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
1892
+18.6%
1896
−1.6%
1900
−2.3%
1904
−13.9%
1908
−7.9%
1912
+25.3%
1916
−11.9%
1920
−39.9%
1924
−56.2%
1928
+19.0%
1932
+5.3%
1936
+22.7%
1940
−0.2%
1944
+3.8%
1948
+2.0%
1952
−8.8%
1956
−23.8%
1960
+8.0%
1964
+41.1%
1968
+4.9%
1972
−24.7%
1976
+4.2%
1980
−9.3%
1984
−21.3%
1988
−6.7%
1992
+0.8%
1996
+6.6%
2000
−11.7%
2004
−8.7%
2008
+4.3%
2012
−15.9%
2016
−42.4%
2020
−45.1%
2024
−47.0%
DemocraticRepublican
34 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024). Swing · margin change from the prior cycle. vs U.S. · margin relative to the national result that year.
Year
Won
Democratic
Republican
Other
Margin
Swing
vs U.S.
Total
R
26.1%Harris4,483
73.1%Trump12,543
0.4%Oliver75 +1
R+47.0
R+1.9
R+45.5
17,153
All 4 candidates in 2024 · 2 minor / independent
Donald J TrumpRepublican73.1%12,543
Kamala D HarrisDemocratic26.1%4,483
Chase OliverLibertarian0.4%75
Jill SteinIndependent0.3%52
R
26.7%Biden4,522
71.8%Trump12,140
1.4%
R+45.1
R+2.6
R+49.5
16,906
R
26.5%Clinton3,853
68.9%Trump10,025
4.6%
R+42.4
R+26.5
R+44.5
14,547
R
41.1%Obama5,463
57.1%Romney7,579
1.8%
R+15.9
R+20.2
R+19.8
13,279
D
51.1%Obama7,290
46.8%McCain6,676
2.1%
D+4.3
D+13.0
R+3.0
14,271
R
45.4%Kerry6,602
54.1%Bush7,872
0.5%
R+8.7
D+3.0
R+6.3
14,550
R
42.4%Gore5,754
54.1%Bush7,347
3.5%
R+11.7
R+18.3
R+12.2
13,580
D
44.2%Clinton5,749
37.6%Dole4,889
18.3%
D+6.6
D+5.8
R+1.9
13,013
D
36.3%Clinton5,016
35.5%Bush4,908
28.3%
D+0.8
D+7.5
R+4.8
13,832
R
46.1%Dukakis5,879
52.9%Bush6,737
1.0%
R+6.7
D+14.6
D+1.0
12,744
R
39.2%Mondale5,486
60.5%Reagan8,470
0.4%
R+21.3
R+12.0
R+3.1
14,007
R
43.1%Carter5,898
52.5%Reagan7,175
4.4%
R+9.3
R+13.6
D+0.4
13,669
D
51.2%Carter6,713
47.0%Ford6,159
1.8%
D+4.2
D+28.9
D+2.2
13,109
R
36.5%McGovern4,710
61.2%Nixon7,900
2.3%
R+24.7
R+29.6
R+1.6
12,908
D
49.0%Humphrey6,886
44.1%Nixon6,193
6.9%
D+4.9
R+36.2
D+5.6
14,046
D
70.5%Johnson10,455
29.4%Goldwater4,354
0.1%
D+41.1
D+33.2
D+18.6
14,828
D
53.9%Kennedy8,398
46.0%Nixon7,155
0.1%
D+8.0
D+31.8
D+7.8
15,567
R
38.0%Stevenson5,498
61.8%Eisenhower8,947
0.2%
R+23.8
R+15.0
R+8.4
14,468
R
45.4%Stevenson6,448
54.3%Eisenhower7,702
0.3%
R+8.8
R+10.9
D+1.9
14,195
D
51.0%Truman5,363
49.0%Dewey5,148
0.0%
D+2.0
R+1.8
R+2.4
10,511
D
51.6%Roosevelt6,097
47.8%Dewey5,645
0.6%
D+3.8
D+4.0
R+3.7
11,809
R
49.8%Roosevelt6,920
50.0%Willkie6,949
0.2%
R+0.2
R+22.9
R+10.2
13,900
D
57.8%Roosevelt9,035
35.1%Landon5,489
7.1%
D+22.7
D+17.4
R+1.6
15,631
D
51.7%Roosevelt6,461
46.4%Hoover5,797
1.9%
D+5.3
R+13.7
R+12.5
12,497
D
59.2%Smith7,705
40.2%Hoover5,234
0.5%
D+19.0
D+75.2
D+36.5
13,009
R
14.6%Davis1,370
70.9%Coolidge6,626
14.5%
R+56.2
R+16.3
R+31.0
9,352
R
26.3%Cox2,093
66.1%Harding5,267
7.6%
R+39.9
R+28.0
R+13.7
7,964
R
40.4%Wilson2,186
52.3%Hughes2,829
7.2%
R+11.9
R+37.2
R+15.0
5,405
O
35.8%Wilson2,057
10.5%Taft603
53.7%
Roosevelt +17.9
D+33.2
D+5.8
5,742
R
43.6%Bryan2,531
51.5%Taft2,991
4.9%
R+7.9
D+6.0
D+1.6
5,805
R
41.3%Parker2,857
55.3%Roosevelt3,820
3.4%
R+13.9
R+11.6
D+5.7
6,914
R
47.8%Bryan3,105
50.1%McKinley3,254
2.2%
R+2.3
R+0.7
D+5.3
6,500
R
48.0%Bryan2,717
49.6%McKinley2,807
2.5%
R+1.6
R+20.2
D+4.5
5,663
D
57.6%Cleveland2,126
38.9%Harrison1,438
3.5%
D+18.6
—
D+17.0
3,693
Congressional elections · 3 Senate races
U.S. Senate
Source · MIT Election Lab (MEDSL), Senate. CC-BY 4.0.
Year
Won
Democratic
Republican
Total
2024
R
27.4%4,674
69.8%11,931
17,089
2022
R
29.8%4,066
66.9%9,128
13,649
2018
R
39.9%4,498
58.6%6,610
11,282
voter registration
Registered voters
By party of registration, over time
Party registration · 2026R+31.0
vs
Presidential vote · 2024R+47.0
Registration leans Republican; the presidential vote runs 16 points more Democratic.
Domestic migration in St. Marys, PA in St. Marys, PA: net domestic migration by year
Year
Net domestic migration
2011
+25
2012
−98
2013
−101
2014
−223
2015
−177
2016
−287
2017
−147
2018
−50
2019
−109
2021
+6
2022
−108
2023
−84
2024
+9
2025
−1
St. Marys, PA sits in the Mid-Atlantic. In 2024 it voted Republican.
Across the recorded series it reached a Democratic high of 41.1 points in 1964 and a Republican high of 56.2 points in 1924. Between 2020 and 2024 the metro moved 1.9 points toward the Republican candidate; the 2024 margin was 47.0 points.
A population of 30,506, a 95% non-Hispanic-white share, and a median household income of $66,380 describe the metro. The metro's voting pattern over the last decade is most similar to that of Johnstown, PA and Tiffin, OH.
Akashic
Political twins — metros
The metros whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
St. Marys, PA, Pennsylvania. Akashic. https://akashic.app/cbsa/41260/. Accessed May 20, 2026. License: CC BY 4.0.
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In 2024, St. Marys, PA, Pennsylvania voted Republican by 47.0 points (R+47.0), carried by the Republican candidate. Out of 17,153 votes cast, 4,483 went Democratic and 12,543 went Republican.
When did St. Marys, PA, Pennsylvania last vote Democratic?
The most recent presidential election in which St. Marys, PA, Pennsylvania voted Democratic was 2008.
How many people live in St. Marys, PA, Pennsylvania?
St. Marys, PA, Pennsylvania has a population of 30,506 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in St. Marys, PA, Pennsylvania?
Median household income in St. Marys, PA, Pennsylvania is $66,380 — below the national median of $80,734. The Pennsylvania state median is $77,971.
What is the political history of St. Marys, PA, Pennsylvania?
Akashic tracks 34 presidential elections in St. Marys, PA, Pennsylvania from 1892 to 2024. Of those, 13 went Democratic and 20 went Republican.
